Brush-drawing machine



2 Sheets-Sheet 1.

(No Model.)

W. LEWIS. BRUSH DRAWING MACHINE.

' Patented Peb.3, 1891.

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Patented Peb.3,1891.

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\VALTER LEWIS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOEDWARD L. RABORG, OF BALTIMORE, MARYLAND.

BRUSH-DRAWING MACHINE.

SPECIFICATION forming part of Letters Ifatent No. 445,855, datedFebruary 3, 1891. Application filed May 8, 1890. $erial No. 351,048. (Nomodel.)

or bunches of bristles may be drawn into the openings in a brush-blockmore securely and with greater rapidity than by the usual method ofdrawing them in by hand, provision being also made for shearing off eachrow of bristles as it is drawn into the block.

In the accompanying drawings, Figure 1 is a perspective view of abrush-drawing machine constructed in accordance with my invention. Fig.2 is a longitudinal sectional view of part of the same on a largerscale.

Fig. 3 is a transverse section, partly in elevation. Figs. 4 and 5 areenlarged sectional views of parts of the machine, and Figs. 6, '7,

and 8 are diagrams illustrating the operation of the machine.

A represents a table mounted upon suit able legs a, and having at oneend a box A for the reception of the bristles. At the other end of thetable are bearings for a reel B, on which is wound the wire :23, wherebythe bunches or knots of bristles are secured to the brush-block y.Mounted upon the table in advance of this reel is a block D, and on thelatter is a movable vise consisting of a plate 7), free toslidelongitudinally on guides on the block B, and having pivoted to itsupper side a plate b,which constitutes the movable jaw of the vise. Theslide b is normally held in aposition at the front end of theblock D bymeans of springs (Z, and the upper or clamping plate I) of the vise israised by means of springs f,inserted between the same and the slide 1)at the opposite sides of the latter. Connected to said slide, however,are cords or straps g, which pass over lugs or proj eetions 7t at thefree end of the plate b, thence over a guide-roller h atthe end of theblock D, and thence down through an opening in the table A to thetreadle F, which is hung to a rod F at the rear of the supporting-frame.It will be seen, therefore, that while the normal position of the viseis that represented in Figs. 1 and 2-that is to say, with the slide 1)at the front end of the block D and the clamping-plate b elevatedpress-'ure upon the treadle' will cause the depression of said clamping-plate,so as to cause it to grip the wire 00, passed between the same and theplate I), the vise being then caused to move rearward on the block D, soas to impart draft to the wire.

In advance of the block D is a standard G, from which is suspended bymeans of a pair of springs 11 a hollow needle J, which has a suitablehandle J, whereby it may be readily manipulated, this needle beingnormally held in a retracted position by means of a spring 7t.

In advance of the needle is a slide K for carrying thebrush-block 11this slide being mounted upon and guided transversely on a bar M, whichhas legs m, passing through openings in the table A, the bar being actedupon by arms a on a rock-shaft a, mounted in bearings on said table andhaving an operating arm or handle 92 so that said bar M and its slidecan be raised and lowered, one of the legs at of the bar being notchedfor engagement with a spring retaining-bolt at, so that the bar may besupported in any desired vertical position. (See Fig. 3.) The slide K isprovided with opposite clamps P for receiving and retaining the ends ofthe brush-block y, these clamps being adjustable longitudinally on theslide K to adapt them to blocks of different lengths, and one flange ofeach clamp being adjustable laterally, as shown in Fig. 5, so as toadapt the clamps for the reception of blocks of'different thicle nesses.

Mounted on a table A so as to be adjustable longitudinally thereon andin a direction transversely to the movement of the slide K are a pair ofstandards S, which carry the lower fixed blade tof a pair of shears, theupper or movable blade t of which is pivoted to the fixed blade at itsouter end and has at the inner end a suitable operating-handle 15 Theoperation of the device is as follows: The brush-block having previouslybeen properly bored for the reception of bristles is adapted to theclamps P, and the bar M is adjusted vertically, so as to bring thelowest row of openings in line with the needle J. The wire as is thendrawn from the reel l3 and passed between the platesb l) of the vise,and thence through the hollow needle J, the front end of the wire beingsuitably secured to the brush-block. The operator grasps the handle J ofthe needle in the right hand and forces the needle through the firstopening in the brush -block, so as to cause its front end to projectsome distance beyond said block, as shown in Fig. 0, the needle beingthen retracted either by the motion of the hand or by releasing thehandle J, so as to permit the spring 76 to retract it. The wire is notconfined by the hollow needle, but passes freely through the same. Hencethe retraction of the needle does not withdraw the wire, but allows thesame to remain projected beyond the brush-block in the form of a loop,as shown in Fig. 7. Meanwhile the operator has selected a bunch ofbristles and inserts them into this loop so that they extend aboutequally on each side of the same, and this beingdone, pressure isapplied to the treadle F, which has the effect of first closing theplates of the vise upon the wire and then drawing the latter rearward,thus pulling the loop of wire and its knot of bristles into the openingin the brush-block, as shown in Fig. 8. Pressure is then removed fromthe treadle and the vise is first opened and then drawn forward, so asto be in position for the next operation, and the needle J is passedthrough the next opening in brushblock, and so on, until the drawing ofthe brush has been completed, the block being moved as desired byshifting the slide K or raising or lowering the bar M, so as to bringthe openingsin succession within range of the needle. There need not,however, be an adj ustment of the block for every movement of theneedle, as the flexible and elastic support for the latter permits it tomove freely in all directions, so that a series of knots may be drawnbefore any readj ustment of the brushbloek becomes necessary.

A single spring may constitute the support for the needle, if desired,although the use of a pair of springs is preferred.

\Vhen a row of bristles has been drawn into the brush-block, the slide Kmay be moved so as to carry said row of bristles between theshear-blades t t, and the movable blade t maybe depressed so as to trimthe projecting bunches or knots of bristles to uniform length, theadjustability of the standards carrying the shears in respect to the barM permitting the formation of knots or bunches of any desired length.

By use of a hollow needle J the formation of the successive loops ofwire can be effected with great. rapidity, as the formation of a loopmust necessarily follow the projection of the needle through anopeningin the brush-block,

no particular care or skill on the part of the operatorbeing requiredbeyond that necessary in properly guiding the needle through the openmg. V 4

The use of a vise operated by a treadle is also preferable to ahand-operated wire-pull ing device, as it provides for the imparting ofthe necessary tension to the Wire with ease and without any liability ofcutting or otherwise injuring the hand.

Having thus described my invention, I claim and desire to secure byLetters Patent- 1. The combination, in a brush-drawing machine, of ablock-holder and a hollow needle through which the drawing-wire ispassed without confinement, whereby on projecting the needle through anopening in the brushblock a projecting loop of wire will be formed forthe reception of the knot of-bristles, which loop is not disturbed onthe retraction of the needle, substantially as specified.

2. The combination, in a brush-drawing machine, of a block-holder and ahollow needle with a flexible suspending device for said needle, wherebythe latter is free to move in all directions in respect to the block,substantially as specified.

3. The combination, in a brush-drawing machine, of a block-holder, ahollow needle, and a spring-support for the latter, substantially asspecified.

at. The combination, in a brush-drawing machine, of a block-holder, ahollou needle, a spring-support for the latter, and a retracting-springtherefor, substantially as specified.

5. The combination, in a brush-drawing machine, of a block-holder, alooping-needle, a movable vise for the draw-wire, and a treadleconnected to said vise, substantially as specified.

6. The combination, in a brush-drawing machine, of a block-holder, aloopingmeedle, a movable vise for the draw-wire, a treadle for operatingsaid vise, and a treadle-strap connected to the fixed plate of the viseand having a bearing upon the movable plate of the same, whereby on thedepression of the treadle the vise is first closed and then movedbodilyon its guides, substantially as specified.

7. The combination, in a brush-drawing machine, of the looping-needlewith a brushblock holder consisting of a vertically-adj ustable bar anda slide movable transversely thereon and having clamps for the.brushblock, substantially as specified.

8. The combination, in a brush-drawing machine, of the looping-needlewith a blockcarrier having vertical clamps with flanges for embracingthe opposite ends of the brushblock, said flanges being adjustablelaterally in respect to each other, substantially as specified.

9. The combination, in a brush-drawing machine, of a brush-block holder,means for drawing knots of bristles into the same, a

movable carrier for the holder, and a pair of shears mounted beyond theblock-holder, but

in line with the movement of the same, substantially as specified.

10. The combination of the slide carrying the clamps for thebrush-block, a bar on which said slide is mounted, a rock-shaft havingarms for acting on said bar to raise and lower the same, dependingguided legs on the bar, and a retaining-bolt engaging with notches inone of said legs to retain the bar in the desired vertical position,substan- IO tially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

\VALTER LEWIS.

Witnesses:

EUGENE ELTERICH, HARRY SMITH.

